Add get_spender().

Author: evoskuil

include/bitcoin/database/impl/query/objects.ipp

@@ -304,6 +304,14 @@ typename CLASS::output::cptr CLASS::get_output(
     return out.output;
 }
 
+TEMPLATE
+typename CLASS::point CLASS::get_spender(const point_link& link) const NOEXCEPT
+{
+    const auto tx = to_spending_tx(link);
+    const auto index = to_input_index(tx, link);
+    return { get_tx_key(tx), index };
+}
+
 TEMPLATE
 typename CLASS::inputs_ptr CLASS::get_spenders(
     const output_link& link, bool witness) const NOEXCEPT

include/bitcoin/database/query.hpp

@@ -397,6 +397,7 @@ class query
     script::cptr get_output_script(const output_link& link) const NOEXCEPT;
     output::cptr get_output(const output_link& link) const NOEXCEPT;
     output::cptr get_output(const tx_link& link, uint32_t index) const NOEXCEPT;
+    point get_spender(const point_link& link) const NOEXCEPT;
     inputs_ptr get_spenders(const output_link& link,
         bool witness) const NOEXCEPT;